Type-cleaner for type-writing machines.



A. D. SPBRRY.

TYPE CLEANER FOR TYPE WRITING MACHINES.

APPLICATION FILED JULY 27, 1908.-

Patented May 4, 1909.

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A. 1). SPERM; v TYPE CLEANER FOR TYPE WRITING MACHINES. APPLICATION FILED JULY 27,-1908.

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knowledge of the details of ARTHUR D. SPERRY, O15 BUTJTE, MONTANA.

TYPE-CLEANER FOR TYPE-WRITING MACHINES.

Specification of Letters Patent.

Patented May 4, 1909.

Application filed July 27, 1908. Serial No. 445,663.

T 0 all "whom "it may concern:

Be it known that I, ARTHUR D. Srnnur, a citizen of the United States, residing at Butte, in the county of Silver Bow and State of Montana, have invented certain new and useful Improvements in Type-Cleaners for Type-VVriting Machines, of which the follon= ing is a specification.

The present invention relates to certain new and useful improvements in type clean ing devices of that character which are employed in connection with typewriters, and the object of the invention is the provision of an improved type cleaner which. can be readily applied to the machine and can be operated in a quick and effective manner to remove all dirt from the type.

The invention further contemplates a type cleaning device which is simple and inexpensive in its construction and embodies novel means for mounting a rotary brush in such a manner that it can be easily manipulated from the exterior of the typewriter.

With these and other objects in view that will more fully appear as the description proceeds, the invention consists in certain constructions and arrangements of the parts that I shall hereinafter fully describe and then point out the novel features thereof, in the appended claims.

For a full understanding of the invention and the merits thereof, and to acquire a construction, reference is to he had to the following description and accompanying drawings, in which:

Figure 1 is a side elevation showing the device applied to a typewriter, the brush being shown as elevated in full lines and as depressed in dotted lines; 2 is a vertical sectional view on the line 22 of Fig. 1; Fig. 3 is a bottom plan view of the type cleaner when detached from the typewriter;

and, Fig. 4 is a side elevation showing a modification.

Corresponding and like parts are referred to in the following description, and indicated in all the views of the drawings, by the same reference characters.

Referring to the drawings, the numeral 1 designates the stock upon which the brush and brush actuating mechanism are mounted, and in the present instance, this stock is in the nature of a bar which is provided at one end with an upwardly projecting tubular arm 2, and at the opposite end with means for engaging the frame of a typewriting machine. Any suitable means may be employed for clamping the stock 1 in position, and in the present instance a U-bolt 3 is utilized for this purpose, the said U bolt being designed to extend around the lower iortion of the typewriter frame at one side tiereof, and the arms of the U bolt passing through the stock 1 and being capped by thumb nuts 3 ith this construction, it will he obvi ous that the type cleaning attachment can be quickly and easily applied to the frame of a typewriter, or removed therefrom as may be found desirable. The brush t has an inverted conical shape, and is carried by a base at. Projecting downwardly from the base 4 in alinement with the vertical axis of the brush, is a shaft 5 which extends below the brush and is received loosely within the tubular arm .2. somewhat larger than the same, is a sleeve 6 which also projects downwardly from the base of the brush, and is designed to receive the tubi'llar arm 2 when the brush is lowered. At the lower end of the sleeve 6 is a pair of spaced flanges 7 which engage the forked end S of a shifter lever S which is pivotally mounted at an intermediate point between a pair of cars 9 projecting from the stock 1 near the outer end thereof. It will thus be obvious that the shifter lever 8 constitutes a means for moving the brush up and down in a vertical direction. The lower end. of the shaft 5 is provided with a pinion 10 which meshes with the rack 11 upon the slide 12 when the brush is raised to the limit of its upward movement. This slide 12 is mounted upon the stock 1 and projects mltwardly beyond the end thereof, where it terminates in a knob or finger piece 13. \Yhcn the brush has been moved rupwardly, and the pinion 10 meshes with the rack 11, the said brush may be rotated alternately in opposite directions by grasping the finger piece 13 and imparting a reciprocating movement to the slide 12. However, when the brush is lowered, the pinion 10 is moved out of engage in cut with the rack, and the brush cannot be rotated tl'irough the medium. of the slide. The invention also contemplates means for holding the brush in an clcvatml position, and for this purpose each arm of the forked end 8" of the shifter lever is provided with a spring extension 14, the said extensions being curved downwardly and then upwardly, and connected by a cross bar 14 which is de- Surrounding the shaft 5, and

signed to enter a notch 15 in one side of the tubular arm 2, and engage an annular groove 16 in the shaft 5. However, this cross bar 1 1 is merely held in a yielding engagement with the groove 16, so that it will readily slip out of the same when force is applied to the shifter lever for lowering the brush.

In the operation of the device, the U bolt 3 is caused to engage the frame of the typewriter at one end thereof, so that the stock projects inwardly within the typewriter. T he shifter lever 8 is then manipulated to raise the brush 4 to the limit of its upward movement, in which position the cross bar 14' enters the notch 15 of the tubular arm 2 and engages the groove 16 in the shaft 5. The pinion 10 then meshes with the rack 11., so that the brush may be rotated alternately in opposite directions by reciprocating the slide 12. The type of the machine may then be perfectly cleaned by pressing downwardly upon the keys and bringing them into contact with the brush.

A slight modification of the invention is shown in Fig. 4, in which the brush B carries a bevel gear 17 which meshes with a corresponding bevel gear 18 upon a shaft 19 which is journaled upon the stock 1. This shaft projects outwardly beyond one end of the stock, where it terminates in a crank handle 2( The stock 1 is designed to be applied to the frame of the type writer in a manner identical with that heretofore described, and the brush is rotated by turning the crank 20.

Having thus described the invention, what I claim is:

1 In a type cleaning device, the combination of a stock, a shaft mounted upon the stock to have both a rotary and an axial movement, a brush upon the shaft, means for moving the brush axially into and out of operative position, means for retaining the brush in an operative position, a pinion upon the shaft, and a slide mounted upon the stock and provided with a rack that meshes with the pinion when the brush is in operative position. 7 2. In a type cleaning device, the combination of a stock, a shaft journaled upon the stock, a brush carried. by the shaft, the said shaft being mounted to have an axial movement whereby the brush can be thrown into and out of operative position and being formed with groove, a spring pressed bar adapted to engage the groove of the shaft to hold the brush in an operative position, and means for rotating the brush.

3. In a type cleaning device, the combination of a stock, a shaft journaled upon the stock, a brush carried by the shaft, the said shaft being mounted to have an axial movement and being formed with a groove, a shifter lever for moving the shaft axially to throw the brush into and out of operative 7 position, a bar carried by the shifter lever and adapted to yieldingly engage the groove of the shaft to hold the brush in an operative position, and means for rotating the brush.

4. In a type cleaning device, the combination of a stock, a tubular arm projecting from the stock and having an opening at one side thereof, a rotary brush, a shaft carried by the rotary brush and loosely received within the tubular arm, the said shaft being rovided with an annular groove, a shifter lever for moving the brush by sliding the shaft longitudinall r within the tubular arm, a spring pressed bar carried by the shifter lever and designed to enter the opening in the tubular arm and engage the groove of the shaft to hold the brush in a predetermined position, and means for rotating the brush.

5. In a type cleaning device, the combination of a stock, a tubular arm projecting from the stock, a rotary brush, a shaft carried by the rotary brush and loosely received within the tubular arm, the tubular arm being provided with an opening and the shaft with an annular groove, a shifter lever for moving the brush by sliding the shaft longitudinally within the tubular arm, a spring pressed bar carried by the shifter lever and designed to enter the opening in the tubular arm and engage the roove of the shaft to hold the brush in a predetermined position, a pinion upon the shaft, and a slide mounted upon the stock and provided with a rack which meshes with the pinion when the brush is held in the before mentioned predetermined position.

6. In a type cleaning device, the combination of a stock, a tubular arm projecting from the stock and having an opening at one side thereof, a rotary brush, a shaft carried by the rotary brush and passing loosely ried by the brush, said sleeve being concentric with the shaft and of such a size as to receive the tubular arm, a shifter lever pivoted upon the stock and engaging the sleeve for moving the brush by sliding the shaft Within the tubular arm, a spring pressed bar carried by the shifter lever and designed to enter the opening in the tubular arm and engage the groove in the shaft to hold the brush in a predetermined position, and slide mounted upon the stock, the said slide being formed with a rack which meshes with the pinion when the brush is held in the before mentioned predetermined position.

In testimony whereof I aff x my signature in presence of two Witnesses.

ARTHUR D. SPERRY.

Witnesses V WILL HARncAsrLE,

in s] CARL J. CHRISTIAN.

through the tubular arm, said shaft being formed with an annular groove, a sleeve car- 

